This update from Apple will improve the functionality of this app. No new features are included.

The app has been updated to take advantage of the larger screens on the iPhone 6 and 6 Plus.
We’ve also fixed a number of bugs, including an issue where upgrading the device to iOS 9 caused thumbnails and images to disappear in the app.
If you have any feedback, or experience any issues with this app, please contact us using the App Support button in the App Store’s  “Ratings and Review” section.